Switch off at the socket?
Norman Wells wrote:
The Natural Philosopher wrote:
dennis@home wrote:
"The Natural Philosopher" wrote in message
...
A chemical compound does not weigh QUITE the same as its elements
taken separately.
A physicist doesn't confuse mass with weight BTW.
You can see the effect described and IIRC tested in terms of light
pressure on a sail ..photons - things with no rest mass at all, are
emitted by even chemical reactions, and can exert momentum changes
on things.
Light pressure has nowt to do with the mass of photons.
The little paddles driven around when you shine a light on them are
not driven by the momentum of photons at all as anyone with an
O'level in physics should be able to tell you.
I wasn't talking about those devices.
No, the question is whether you know what you're talking about at all.
The answer is, I do, and you don't.
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